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. Author manuscript; available in PMC: 2015 Mar 14.
Published in final edited form as: Curr Opin Genet Dev. 2013 Aug 12;23(5):548–555. doi: 10.1016/j.gde.2013.06.005

Fig. 3.

Fig. 3

Unanswered questions in the field of transdifferentiation. Transitioning from one cell type to another could involve going through a pluripotent state, the nearest common progenitor state, or one or more unknown states.